Black Widow KBX Black Widow KBX

Black Widow KBX

Black Widow KBX
Black Widow KBX


Black Widow Custom Bows
1201 Eaglecrest
Nixa, MO 65714
- USA -

Black Widow KBX

  • Bow Model: KB X Bocote
  • Bow Length: 58"
  • Recommended Brace Height: 8" to 8-3/4"

  • Black Widow KBX
  • Riser:
  • Geometry: deflex
  • Grip-Style: medium high pistol type grip
  • Materials: Bocote and glass laminations
  • Length (Fade-Out to Fade-Out): 17-3/4 inches / 450 mm
  • Sight Window Height: 2-1/2 inches / 70 mm
  • Center Cut: 1/8 inch / 3.5 mm past center

  • Black Widow KBX
  • Limbs:
  • Shape and Cross-Section: recurved limbs with rectangular cross-section
  • Materials: ActionBoo core, Bocote veneers, clear glass
  • Tip Overlays: multilaminated glass overlays
  • Width at Fade-out: 1-11/16 inches / 43 mm
  • Width below String Groove: 5/8 inches / 16 mm

  • Black Widow KBX
  • Black Widow KBX
  • Finish: satin, matte Marine Epoxy Finish called "Frost Finish"
  • Black Widow KBX
  • Supplied String: 14 strand flemish twist string from Dynaflight 97

Black Widow KBX

  • Brace Height for Testing: 8-3/8 inches / 212 mm
  • Draw Length for Testing: 28"
  • Draw Weight: 50.2 lbs
  • String Angle: 125°
  • Stored energy ( ft-lbs): 44.88
  • Stored energy per pound of draw weight (ft-lbs/lbs): 0.89
  • Arrow Weight (grains): 452
  • Arrow Speed (feet per second): 192
  • Kinetic Energy of arrow (ft-lbs): 37.1
  • Dynamic efficiency (%): 82.5
  • Black Widow KBX
  • Testing Parameters:

    A force-draw curve was obtained from the reviewed bow, using a digital force gauge with a resolution of 0.1 lbs. Measured bow weight was rounded to the next half pound.
    The different arrow speeds were achieved with the bow shot from a shooting machine with a mechanical release. The string was pulled to 28 inches A.T.A. (formerly A.M.O.) which is 26-1/4 inches from the string to the deepest point of the grip.
    The (3) arrows for the speed testing had a weight of 9 grains per pound of measured (not stated) draw weight. Speed measurements were taken 3 feet in front of the back of the bow with two chronographs set up in a tandem configuration. Each arrow was shot a minimum of 6 times and overall achieved speeds were rounded to the next whole digit.
    The bow was set up with my standard 16 strand Fast-Flight string, that features one metal crimp-on nocking point locator but no other attachments, like silencers, kisser button, etc.
    Note: Numerous tests over the years showed that arrow speeds achieved with my finger release, using a clicker, run 5 fps lower on average, than the arrow speeds with a mechanical release.

  • Black Widow KBX

Black Widow KBX